I'm surprised no one has yet mentioned the work around for this DOF issue.
A number of EOS bodies offer the facility but some bodies work differently from others. I think the way it works on the 30/Elan 7 is far better (more control) than the lower end bodies but I am somewhat surprised to learn it is no better on the 1v. I think its a valuable tool in certain situations but the fact that Canon choose a .2mm CoC is a bit limiting I think. These are pro and semi-pro bodies and yet the .2mm CoC is supposed to be useful for prints only up to 7x5 I understand. How many pros use 7x5 or smaller. Not many methinks. Anyway, the work around on an 30/Elan 7, or the 50E (and probably the 3 & 1v) is to choose your near and far points as usual, but then without changing focus point, switch the lens to MF so that you effectively "lock in" the focus point. Then switch the camera to Av mode and select a smaller aperture (than the one that DEP mode gave) to gain as much extra DoF (or smaller CoC) as you like. I find just an extra stop or 2 is normally fine depending on EV level and resultant shutter speed. Alternatively, simply choose near and far focus points "beyond" those that you actually want. I use both methods for slides projected up to 5ft x 3ft with complete success. Cheers Norman * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
